Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham hoi cac snippets" » "cham voi cac snippets", "cham h'roi cac snippets", "pham hoai cac snippets", "cham hoc cac snippets", "cham hoa cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cham hoi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham hoi cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham hoi cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham hoi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.